I'm not sure if mathematica is mentioned anywhere in the show but from wikipedia it states "Wolfram Research (the maker of Mathematica) is the chief math consultant, reviewing scripts and providing background mathematics for the show."

Thanks for the link correction, just take out the www in the address and it will work. Here's the link: http://numb3rs.wolfram.com I haven't had a good chance to fully read the links to each of the episodes, they seem to be done fairly well.

Maybe someone could start a numb3rs blog here at mapleprimes and make worksheets associated to each episode.

But now I have to substitute those values into a to find the y intercept for each x (ie. subs(c[1],a); etc...) for all the intercepts. I really don't want to have to do that.

What I'd like to do is have Maple calculate the x,y intercepts in one step and show them to me. This is what I've tried and I can't seem to prod it out of Maple.

a:=y=x^2-10-10*sin(x);

b:=y=cos(x);

solve({a,b}); or solve({a,b},{x,y});

Returns x=RootOf ... and y=RootOf answers. I try to evalf(%) or allvalues(%) but I only get one answer

{x=-1.006881416,y=0.5344990470}

fsolve({a,b}); or fsolve({a,b},{s,y}) gives me another of the intercepts, but doesn't tell me all of them {x=-1.144307303,y=0.4136768823}

fsolve doens't seem to like multiple equations specified over a range so I can't find all the intercepts using fsolve without having to first combine the equations and finding the roots and then use the subs command.

So I asked a different question above in this thread. Because it was somewhat related I posted in the same thread however it is a somewhat different topic should I start it as a new thread? It may be an obscured question because it follows a topic already answered.

So anyone know why my Ellipse and Parabola produce a 4 point solution when only 2 exist?

Thanks for the allvalues however when I use allvalues with an ellipse and parabola I get 4 points to the solution.

e1:=x^2/2500+y^2/200=1;

e2:=y=x^2;

solve({e1,e2},{x,y});

allvalues(%);

Gives me 4 points. There's only two in the solution. Why does it poduce 4? Maybe I'm not understanding allvalues or how Rootof works but maybe it's a bug?

It shows 2 points in the negative y quadrants like it's finding the mirrored parabola intersect points which is clearly not part of the solution. The e2 equation never gets to negative y values let alone even crossing the ellipse there so I'm not quite sure why the solution of the 2 equations gives me those points. Does allvalues just give every possible combination of -'ve and +'ve x's and y's even if it's not an answer to the solution?

Yes, more explanation. Ahmedluss, can you explain a little more what your code does. Some of us do not have Matlab. Yes Maple can export and convert code to Matlab but it's apparent and unfortunate Matlab doesn't convert to Maple. My first quick guess at what your code does, is some sort of insect growth population scenario.